282 



THE RABBIT 



ganglia. These ganglia, giving rise to nerves which supply the stomach and 

 neighbouring parts, constitute the large coeliac or solar plexus. 



Make a drawing showing the solar plexus and neighbouring parts. 



Liver 



CEsophagus--^ 

 Vagus X. 



Nerve to stomach' 

 Ileum- 

 Anterior mesenteric artery 



l-'Corsal aorta 



Postcaval vein 

 ;7.Splanchnic nerve 



-Coeliac artery 

 Coeliac ganglion 

 Supra renal body 



Renal artery 



Renal vein 

 Sympathetic cord 



Fig. 94. — The Solar Plexus, and neighbouring structures, of the Rabbit. 



Third Day 



The Vascular System {continued). 



Carefully remove the thymus gland so as to expose the origins of the blood- 

 vessels from the heart. Remove the pericardium. Note that the heart, is 

 four-chambered and conical in shape. {See Heart, page 268.) 



The two ventricles occupy nearly the whole of the ventral aspect of the 

 heart. A groove-line, which is directed obliquely from the base and which does 

 not quite reach the apex {.see Fig. 93), indicates the division of the ventricles ; 

 that one on the right of the line, and not reaching the apex of the heart, is bhe 

 right ventricle. Only portions of the two auricles are seen on the. ventral 

 surface (above the ventricles). 



The following vessels open into the right auricle of the heart : — 



(a) The right superior vena cava or precaval, on the dorsal wall of the right 



auricle. 

 (6) The left superior vena cava or precaval, on the left side of the right 



auricle. 



